oj.uz

Submission #948266

# Submission time Handle Problem Language Result Execution time Memory
948266 2024-03-18T02:32:57 Z steveonalex Connecting Supertrees (IOI20_supertrees) C++14
40 / 100
 160 ms 24464 KB 
#include <bits/stdc++.h>
#include "supertrees.h"
 
using namespace std;
 
typedef long long ll;
typedef unsigned long long ull;
 
#define MASK(i) (1ULL << (i))
#define GETBIT(mask, i) (((mask) >> (i)) & 1)
#define ALL(v) (v).begin(), (v).end()
 
ll max(ll a, ll b){return (a > b) ? a : b;}
ll min(ll a, ll b){return (a < b) ? a : b;}
 
ll LASTBIT(ll mask){return (mask) & (-mask);}
int pop_cnt(ll mask){return __builtin_popcountll(mask);}
int ctz(ll mask){return __builtin_ctzll(mask);}
int logOf(ll mask){return 63 - __builtin_clzll(mask);}
 
mt19937_64 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
ll rngesus(ll l, ll r){return l + (ull) rng() % (r - l + 1);}
 
template <class T1, class T2>
    bool maximize(T1 &a, T2 b){
        if (a < b) {a = b; return true;}
        return false;
    }
 
template <class T1, class T2>
    bool minimize(T1 &a, T2 b){
        if (a > b) {a = b; return true;}
        return false;
    }
 
template <class T>
    void printArr(T& container, string separator = " ", string finish = "\n", ostream &out = cout){
        for(auto item: container) out << item << separator;
        out << finish;
    }
 
template <class T>
    void remove_dup(vector<T> &a){
        sort(ALL(a));
        a.resize(unique(ALL(a)) - a.begin());
    }

struct DSU{
    int n;
    vector<int> parent, sz;

    DSU(int _n){
        n = _n;
        parent.resize(n); sz.resize(n, 1);
        for(int i = 0; i<n; ++i) parent[i] = i;
    }

    int find_set(int u){return (u == parent[u]) ? u : (parent[u] = find_set(parent[u]));}
    bool same_set(int u, int v){return find_set(u) == find_set(v);}

    bool join_set(int u, int v){
        u = find_set(u), v = find_set(v);
        if (u != v){
            if (sz[u] < sz[v]) swap(u, v);
            parent[v] = u;
            sz[u] += sz[v];
            return true;
        }
        return false;
    }
};

// void build(vector<vector<int>> p){
//     cout << "Answer: \n";
//     for(int i = 0; i<p.size(); ++i) printArr(p[i]);
// }

const int N = 1009;

vector<int> crew[N];

int construct(vector<vector<int>> p) {
    int n = p.size();
    vector<vector<int>> ans(n, vector<int>(n));

    for(int i = 0; i<n; ++i) crew[i].clear();

    DSU chode(n);
    for(int i = 0; i<n; ++i) for(int j = i+1; j<n; ++j) if (p[i][j]) chode.join_set(i, j);
    for(int i = 0; i<n; ++i) for(int j = i+1; j<n; ++j) if (p[i][j] == 0 && chode.same_set(i, j)) return 0; 

    for(int i = 0; i<n; ++i) crew[chode.find_set(i)].push_back(i);

    DSU sigma(n);
    for(int i= 0; i<n; ++i) for(int j = i+1; j<n; ++j) if (p[i][j] == 1) sigma.join_set(i, j);

    for(int i = 0; i<n; ++i) if (crew[i].size()){
        vector<int> pos;
        int idx = -1;
        for(int j: crew[i]) if (j != sigma.find_set(j)) {
            int k = sigma.find_set(j);
            if (idx != -1 && k != idx) return 0;
            idx = k;
            ans[j][k] = ans[k][j] = 1;
        }
        else pos.push_back(j);

        if (pos.size() == 1) continue;
        if (pos.size() == 2) return 0;
        int m = pos.size();
        for(int x: pos) if (x != idx) for(int y: crew[i]) if (x != y)
            if (p[x][y] != p[pos[0]][pos[1]]) return 0;
        int deg = p[pos[0]][pos[1]];
        if (pos.size() <= deg) return 0;
        for(int i = 0; i<m; ++i) {
            int j = (i + 1) % m;
            ans[pos[i]][pos[j]] = ans[pos[j]][pos[i]] = 1;
        }
        if (deg == 3){
            ans[pos[0]][pos[2]] = ans[pos[2]][pos[0]] = 1;
        }
    }

    build(ans);
    return 1;
}

 
// int main(void){
//     ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
//     construct({{1, 1, 2, 2}, {1, 1, 2, 2}, {2, 2, 1, 2}, {2, 2, 2, 1}});
//     return 0;
// }

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:114:24: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  114 |         if (pos.size() <= deg) return 0;
      |             ~~~~~~~~~~~^~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 504 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 6 ms 1116 KB Output is correct
7 Correct 146 ms 22052 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 504 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 6 ms 1116 KB Output is correct
7 Correct 146 ms 22052 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 6 ms 1116 KB Output is correct
13 Correct 138 ms 22052 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 71 ms 12068 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 35 ms 5912 KB Output is correct
21 Correct 139 ms 22096 KB Output is correct
22 Correct 151 ms 22028 KB Output is correct
23 Correct 141 ms 22096 KB Output is correct
24 Correct 135 ms 22096 KB Output is correct
25 Correct 75 ms 12116 KB Output is correct
26 Correct 56 ms 12068 KB Output is correct
27 Correct 153 ms 22100 KB Output is correct
28 Correct 133 ms 22100 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 9 ms 1116 KB Output is correct
9 Correct 138 ms 22228 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 6 ms 1116 KB Output is correct
13 Correct 138 ms 22036 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 63 ms 12072 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 34 ms 5716 KB Output is correct
22 Correct 140 ms 24148 KB Output is correct
23 Correct 160 ms 24084 KB Output is correct
24 Correct 152 ms 24464 KB Output is correct
25 Correct 75 ms 14096 KB Output is correct
26 Correct 59 ms 14156 KB Output is correct
27 Correct 138 ms 23960 KB Output is correct
28 Correct 144 ms 24400 KB Output is correct
29 Correct 58 ms 14164 KB Output is correct

Subtask #4
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 35 ms 6236 KB Output is correct
5 Correct 138 ms 24148 KB Output is correct
6 Correct 136 ms 24148 KB Output is correct
7 Correct 143 ms 24300 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 35 ms 6304 KB Output is correct
10 Correct 137 ms 24004 KB Output is correct
11 Correct 138 ms 24148 KB Output is correct
12 Correct 144 ms 24152 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 464 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Incorrect 15 ms 3928 KB Answer gives possible 0 while actual possible 1
17 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 504 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 6 ms 1116 KB Output is correct
7 Correct 146 ms 22052 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 6 ms 1116 KB Output is correct
13 Correct 138 ms 22052 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 71 ms 12068 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 35 ms 5912 KB Output is correct
21 Correct 139 ms 22096 KB Output is correct
22 Correct 151 ms 22028 KB Output is correct
23 Correct 141 ms 22096 KB Output is correct
24 Correct 135 ms 22096 KB Output is correct
25 Correct 75 ms 12116 KB Output is correct
26 Correct 56 ms 12068 KB Output is correct
27 Correct 153 ms 22100 KB Output is correct
28 Correct 133 ms 22100 KB Output is correct
29 Correct 0 ms 344 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 1 ms 344 KB Output is correct
36 Correct 9 ms 1116 KB Output is correct
37 Correct 138 ms 22228 KB Output is correct
38 Correct 0 ms 344 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 6 ms 1116 KB Output is correct
41 Correct 138 ms 22036 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 1 ms 348 KB Output is correct
44 Correct 3 ms 860 KB Output is correct
45 Correct 63 ms 12072 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 34 ms 5716 KB Output is correct
50 Correct 140 ms 24148 KB Output is correct
51 Correct 160 ms 24084 KB Output is correct
52 Correct 152 ms 24464 KB Output is correct
53 Correct 75 ms 14096 KB Output is correct
54 Correct 59 ms 14156 KB Output is correct
55 Correct 138 ms 23960 KB Output is correct
56 Correct 144 ms 24400 KB Output is correct
57 Correct 58 ms 14164 KB Output is correct
58 Correct 1 ms 348 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 3 ms 860 KB Output is correct
61 Correct 67 ms 14096 KB Output is correct
62 Correct 0 ms 348 KB Output is correct
63 Correct 0 ms 348 KB Output is correct
64 Correct 1 ms 348 KB Output is correct
65 Incorrect 20 ms 3932 KB Answer gives possible 0 while actual possible 1
66 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 504 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 6 ms 1116 KB Output is correct
7 Correct 146 ms 22052 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 6 ms 1116 KB Output is correct
13 Correct 138 ms 22052 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 71 ms 12068 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 35 ms 5912 KB Output is correct
21 Correct 139 ms 22096 KB Output is correct
22 Correct 151 ms 22028 KB Output is correct
23 Correct 141 ms 22096 KB Output is correct
24 Correct 135 ms 22096 KB Output is correct
25 Correct 75 ms 12116 KB Output is correct
26 Correct 56 ms 12068 KB Output is correct
27 Correct 153 ms 22100 KB Output is correct
28 Correct 133 ms 22100 KB Output is correct
29 Correct 0 ms 344 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 1 ms 344 KB Output is correct
36 Correct 9 ms 1116 KB Output is correct
37 Correct 138 ms 22228 KB Output is correct
38 Correct 0 ms 344 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 6 ms 1116 KB Output is correct
41 Correct 138 ms 22036 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 1 ms 348 KB Output is correct
44 Correct 3 ms 860 KB Output is correct
45 Correct 63 ms 12072 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 34 ms 5716 KB Output is correct
50 Correct 140 ms 24148 KB Output is correct
51 Correct 160 ms 24084 KB Output is correct
52 Correct 152 ms 24464 KB Output is correct
53 Correct 75 ms 14096 KB Output is correct
54 Correct 59 ms 14156 KB Output is correct
55 Correct 138 ms 23960 KB Output is correct
56 Correct 144 ms 24400 KB Output is correct
57 Correct 58 ms 14164 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 0 ms 348 KB Output is correct
61 Correct 35 ms 6236 KB Output is correct
62 Correct 138 ms 24148 KB Output is correct
63 Correct 136 ms 24148 KB Output is correct
64 Correct 143 ms 24300 KB Output is correct
65 Correct 0 ms 348 KB Output is correct
66 Correct 35 ms 6304 KB Output is correct
67 Correct 137 ms 24004 KB Output is correct
68 Correct 138 ms 24148 KB Output is correct
69 Correct 144 ms 24152 KB Output is correct
70 Correct 1 ms 348 KB Output is correct
71 Correct 0 ms 464 KB Output is correct
72 Correct 0 ms 348 KB Output is correct
73 Incorrect 15 ms 3928 KB Answer gives possible 0 while actual possible 1
74 Halted 0 ms 0 KB -